Steam is described as 'digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation' and is one of the leading apps in the Gaming Software category. There are more than 50 alternatives to Steam for a variety of platforms, including Online / Web-based, Windows, Linux, Mac and Android. The best alternative is GOG.com, which is free. Other great apps like Steam are Humble Bundle (Paid), itch.io (Free, Open Source), Epic Games Store (Free) and Lutris (Free, Open Source).
- HTC's app store for virtual reality. View 2 alternatives to Viveport
- Free • Proprietary
Viveport vs SteamThey're both places to get games (and other software) from, but VivePort deals in VR stuff (Vive stuff, even) and is subscription, while Steam is for general desktop gaming and is once-off purchases (excluding DLC).